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Product

subsea Ethernet, RS-485 & sonar coaxial data cable MIL-C-17 / IEC 61196600 V (-40 to +80 °C)Subsea / Marine Outer Protective She

Deep-Sea 50/75-Ohm Subsea Sonar Coax CableMIL-C-17 / IEC 61196 — 600 V — -40 to +80 °C Subsea & Marine Cable

Deep-Sea 50/75-Ohm Subsea Sonar Coax Cable featuring coaxial center conductor and subsea / marine outer protective sheath (MIL-C-17 / IEC 61196, 600 V, -40 to +80 °C, min. bend radius 6 × OD).

Water-resistant

EMC screen

Outdoor & humid

Approved

Configuration

Order designation: Deep-Sea 50 RG59/75Ω + 4C
Outer Ø ≈: 10.8 mm
Net weight ≈: 165 kg/km
Max. pulling ≈: 8.5 kN
Core / stranding: SnCu Center + Foam PE + TCWB + Subsea PUR

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 600 V
Operating temp.: −40…+80 °C
Min. bend radius: 6 × OD
Core / conductor: Coaxial Center C
Outer protection: Subsea / Marine
Standard: MIL-C-17 / IEC 6

Typical values for this cable type, based on MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is Deep-Sea 50/75-Ohm Sonar Coax right for your machine?

Deep-Sea 50/75-Ohm Subsea Sonar Coax Cable featuring coaxial center conductor and subsea / marine outer protective sheath (MIL-C-17 / IEC 61196, 600 V, -40 to +80 °C, min. bend radius 6 × OD).

Immersion & wet locations

Suitable

Longitudinal water-blocking compounds and high-pressure subsea PUR/PE jackets survive up to 600 bar (6,000 m) hydrostatic immersion.

Fixed installation

Suitable

Controlled 100 Ω Ethernet, 120 Ω RS-485 and 50/75 Ω coaxial impedance ensures low-attenuation telemetry across subsea arrays.

Free-hanging vertical run

Suitable

Stranded tinned copper conductors and braided shields tolerate ROV tether flexing, buoy moorings and subsea frame routing.

Offshore platform & shipboard deck trays

Suitable

NEK 606 MUD-resistant LSHF and UV-stabilized PUR jackets withstand offshore topside trays and wet deck splash zones.

Motorised monospiral reel

Not suitable

Unarmoured sensor bus and coax cables require strain relief and are not intended for unguided high-tension crane drums.

Use 1SSA13 Armoured Coax Tow

Typical machinesUnderwater & Ocean Exploration6,000 m Full-Ocean-Depth ROV Gigabit Ethernet & HD VideoAquaculture Cage RS-485 / Modbus Environmental TelemetryMultibeam Sonar, CTD & Hydrophone Coaxial Signal LinksNEK 606 Offshore Platform & Vessel Data Networks

Construction

Layer by layer

Shown: Deep-Sea 50/75-Ohm Sonar Coax (MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification) featuring coaxial center conductor, low-loss coaxial dielectric & braid shield and subsea / marine outer protective sheath (4-layer construction).

Deep-Sea 50/75-Ohm Sonar Coax — stepped horizontal cutaway showing Coaxial Center Conductor and Subsea / Marine Outer — Layer cutaway

#	Layer	Material & reference
1	Coaxial Center Conductor	High-conductivity stranded copper (or steel-core on CB 1900) center conductor
2	Low-Loss Coaxial Dielectric & Braid Shie	Low-capacitance cellular Foam-Skin PE insulation + braided copper outer conductor
3	Copper Wire Braid EMC Screen	High-coverage braided copper shield for EMI/VFD protection
4	Subsea / Marine Outer Protective Sheath	Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath

Deep-Sea 50/75-Ohm Sonar Coax — Standard Subsea & Marine Execution

Built to MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification with coaxial center conductor and subsea / marine outer protective sheath

Deep-Sea 50/75-Ohm Sonar Coax — Custom Winch Length / Molded Termination

Available on continuous export winch drums or factory-terminated with subsea wet-mate / mechanical sockets

Deep-Sea 50/75-Ohm Sonar Coax — Hydrostatic & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, conductor/optical continuity & hydrostatic qualification report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: 600 V (MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification)
Core / conductor construction: Coaxial Center Conductor — High-conductivity stranded copper (or steel-core on CB 1900) center conductor
Primary dielectric / optical buffer: Low-Loss Coaxial Dielectric & Braid Shield — Low-capacitance cellular Foam-Skin PE insulation + braided copper outer conductor

Thermal

Continuous operating temperature: −40…+80 °C (submerged seawater & topside deck service)
Hydrostatic & thermal cycling endurance: Verified cold-bend and wet dielectric stability across −40…+80 °C per MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: Subsea / Marine Outer Protective Sheath — Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath
Minimum bending radius: 6 × OD
Reinforcement / screen / bedding layer: Copper Wire Braid EMC Screen — High-coverage braided copper shield for EMI/VFD protection

Resistance

Seawater, hydrolysis & oil resistance: Resistant to permanent seawater immersion, hydrolysis, hydraulic oil and bio-fouling per MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification
Hydrostatic pressure & water blocking: Radial and longitudinal water-blocking integrity verified per MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification
Subsea & conductor qualification standards: IEC 60228 / DNV-ST-E402 / ISO 13628-5 / IEC 60794 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: Deep-Sea 50/75-Ohm Sonar Coax
Sheath colour & metre marking: Continuous metre-marked black outer finish (Subsea / Marine )
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard Deep-Sea 50/75-Ohm Sonar Coax configurations

Manufactured to MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification for subsea robotics, ROV umbilicals, marine aquaculture and offshore sensor applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Max. pulling kN ≈	Min. bend R mm
Deep-Sea 50/75-Ohm Sonar Coax Construction Schedule (−40…+80 °C)
Deep-Sea 50 RG59/75Ω + 4C	1×75 Ω Coax + 4×0.75 mm² (18 AWG)	SnCu Center + Foam PE + TCWB + Subsea PUR	10.8	165	8.5	65
Deep-Sea 50 RG213/50Ω + 6C	1×50/75 Ω Coax + 6×1.5 mm² + 1×TP	SnCu + Dual Braid Shield + Aramid/GSWA	14.4	340	22.0	90
Deep-Sea 50 3×Coax + 6C	3×75 Ω Video Coax + 6×1.5 mm² Power	Multi-Coax Bundle + Armour + Subsea Jacket	18.6	620	48.0	125

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core counts, optical fiber channels, wet-mate terminations and continuous winch lengths available per MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance / Load	Operating temp.
1×75 Ω Coax + 4×0.75 mm² (18 AWG)	26.00	600 V · 75 Ω ±3 Ω	−40…+80 °C
1×50/75 Ω Coax + 6×1.5 mm² + 1×TP	13.30	600 V · 50/75 Ω Sonar	−40…+80 °C
3×75 Ω Video Coax + 6×1.5 mm² Power	13.30	600 V · 3-Ch 75 Ω Coax	−40…+80 °C

Every production length undergoes routine conductor DC resistance / OTDR optical attenuation, AC dielectric and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance / OTDR optical & dimensional check (MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification)	DC resistance at 20 °C, optical attenuation and wall thickness within MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification)	Zero dielectric breakdown and verified wet insulation resistance for 600 V rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile load & seawater immersion qualification (MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification)	Verified hydrostatic pressure integrity, breaking load and flex endurance across −40…+80 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-C-17 / IEC 61196 CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX Deep-Sea 50/75-Ohm Sonar Coax MIL-C-17 / IEC 61196 600 V CE

Delivery form: Heavy-duty export fumigated wooden drums, steel winch reels or pre-terminated subsea assemblies
Standard lengths: 500 m, 1,000 m, 3,000 m continuous winch lengths or custom cut-to-length subsea jumpers
MOQ: 100 m (standard configurations) · 300 m (custom subsea builds)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFDeep-Sea 50/75-Ohm Subsea Sonar Coax Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXDeep-Sea 50/75-Ohm Sonar Coax spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-29
Updated: 2026-10-29

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define Deep-Sea 50/75-Ohm Sonar Coax (Deep-Sea 50/75-Ohm Subsea Sonar Coax Cable)?

Deep-Sea 50/75-Ohm Sonar Coax (Deep-Sea 50/75-Ohm Subsea Sonar Coax Cable) is manufactured in accordance with MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification for 600 V subsea,ROV and marine aquaculture service over -40 to +80 °C. Its 4-layer construction comprises coaxial center conductor, low-loss coaxial dielectric & braid shield and subsea / marine outer protective sheath.

What is the minimum bending radius and operating temperature range for Deep-Sea 50/75-Ohm Sonar Coax?

The minimum bending radius for Deep-Sea 50/75-Ohm Sonar Coax is 6 × OD across its continuous operating temperature range of -40 to +80 °C, ensuring mechanical flex endurance and hydrostatic reliability in subsea winches, TMS cages and aquaculture installations.

How are the concentric layers of Deep-Sea 50/75-Ohm Sonar Coax arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Coaxial Center Conductor — High-conductivity stranded copper (or steel-core on CB 1900) center conductor; (02) Low-Loss Coaxial Dielectric & Braid Shield — Low-capacitance cellular Foam-Skin PE insulation + braided copper outer conductor; (03) Copper Wire Braid EMC Screen — High-coverage braided copper shield for EMI/VFD protection; (04) Subsea / Marine Outer Protective Sheath — Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath.

What factory test certificates are supplied with Deep-Sea 50/75-Ohm Sonar Coax?

Every production drum of Deep-Sea 50/75-Ohm Sonar Coax undergoes routine conductor DC resistance / optical OTDR continuity, AC high-voltage dielectric and dimensional testing per MIL-C-17 & IEC 61196 Deep-Sea 50/75-Ohm Subsea Sonar Coax Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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03Message for our engineers

Deep-Sea 50/75-Ohm Subsea Sonar Coax Cable

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